2545555 has 8 divisors (see below), whose sum is σ = 3106800. Its totient is φ = 2001696.

The previous prime is 2545553. The next prime is 2545561. The reversal of 2545555 is 5555452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2545555 - 2¹ = 2545553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2545553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4020 + ... + 4609.

It is an arithmetic number, because the mean of its divisors is an integer number (388350).

2^2545555 is an apocalyptic number.

2545555 is a deficient number, since it is larger than the sum of its proper divisors (561245).

2545555 is an equidigital number, since it uses as much as digits as its factorization.

2545555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8693.

The product of its digits is 25000, while the sum is 31.

The square root of 2545555 is about 1595.4795517336. The cubic root of 2545555 is about 136.5402923269.

The spelling of 2545555 in words is "two million, five hundred forty-five thousand, five hundred fifty-five".